Original photograph: 13 x 18 cm, black & white photo, with "NA" written in front in pencil, caption under photo reads "KP-1133-R2 - Klamath Project - Klamath Straits Drain Outlet - South Canal Syphon - Detail of rubber water stop in the contraction joint. C. O. Wanstad (sic), Photo July 20, 1945", from Black Binders Digital reproduction of photograph: KP-1133-R2 - Klamath Project - Klamath Straits Drain Outlet - South Canal Syphon, Black Binders, Bureau of Reclamation